题目内容
________ was reported, the US was under the terrorist attack．
- A.As
- B.It
- C.That
- D.Which
该题reported后面的逗号对答案的选择至关重要。有逗号说明该题应由as引导一个非限制性定语从句，修饰后面整个主句，定语从句中只有as引导的才可以置于主句之前。如果用形式主语it，那么reported后不应有逗号，且后面的主语从句须有引导词that，即It was reported that the US…。如果该定语从句置于主句之后，也可以由which引导，即The US…, which was reported。
When you see homework covering the kitchen table and toys are piling up around the sofa, you probably wish there was a bit more space. You are not alone. Nearly a third of parents say they feel squeezed into their homes but cannot afford to move to a bigger property, a report reveals today.
Twenty-nine perc
ent say “their property is too small to fit the size of their family—rising to 40 percent for those 34 and under”. One in four children is ‘forced to share’ a bedroom, according to the Finda-Property. Com website. Property analyst Samantha Baden said: “Afford-ability remains a key issue for families, with the average cost of a three-bedroom home around ￡193,000.”Very few can afford to buy or to rent a property of the size they want and in the area they desire to live in, according to Miss Baden.
A recent report, from investment firm LV, also found that many ‘space-starved parents’are pushed into a two-bedroom home which was perfect when they were a young couple, but has no space for three or so children. Grown-up children who cannot afford to leave homo are also adding to the problem facing families in Britain’s ‘big squeeze’.
For a home to be the correct size, which means it is not overcrowded, parents must have their own bedroom. Children under ten can share, as well as same-sex children between ten and 20.Anyone over 21 also needs their own room.
The report comes as official figures, published yesterday by the Land Registry, revealing house prices are falling sharply in every region except London. The worst – hit area is the North East where average house prices have fallen to below ￡100, 000 for the first time in seven years. However, they remain unaffordable for millions.【小题1】According to Paragraph 1, the report reveals .
| A．children like to do homework in the kitchen |
| B．some families can’t afford a bigger property |
| C．only a few families have housing problem |
| D．people are satisfied with their living condition |
| A．most families don’t have enough money yet |
| B．no family could afford a three - bedroom home |
| C．it is common to live in a three - bedroom home |
| D．the price of a bigger property is still acceptable |
| A．young couples should live in a two - bedroom home |
| B．families with three or so children couldn’t afford a home |
| C．parents should buy houses for their grown - up children |
| D．some grown - up children couldn’t afford a separate home |
| A．House prices are falling down everywhere. |
| B．People are able to buy a home of correct size. |
| C．The house prices in London has not fallen down. |
| D．The North East is now an area suitable to live in. |
Scientists have not come close to understanding all the different kinds of life on the planet, but US researcher Craig Venter is already working on creating the first artificial life.
Venter and his researchers made a breakthrough this August. They successfully moved the DNA of one type of bacteria(细菌) to a yeast(酵母) cell, changed it, then put it into another bacterial cell.
“Bacteria have systems that protect them from foreign DNA,” Venter explained to the BBC. In the experiment, the team managed to block this system.
The experiment was performed on a simple type of bacteria called Mycoplasma mycoides. The team took the bacteria’s genes and put them into a yeast cell.
Putting the DNA in a yeast cell allowed the team to change the genes----in this case, taking out a gene that was not necessary for the bacteria to live.
They then put the gene into a host bacteria cell. The cell went on to divide normally, producing new healthy bacteria.
In January, the team created artificial genes of a new type of bacteria. Their next goal is to put the artificial DNA into a host cell to create a new species, according to a report in Science magazine.
“If we don’t make any errors, I think it should work and we should have the first artificial species by the end of the year,” Venter said in the report.
The first artificial life from is likely to be a simple man-made bacteria, to prove that the technology can work. But that form will be followed by more complex bacteria that turn coal into cleaner natural gas, or algae that can take in carbon dioxide and change it into fuel.
Many scientists think it’s good news to have this artificial life, but others are worried that the technology to create new organisms might end up in the wrong hands, with dangerous results.
【小题1】Craig Venter and his team are working to ______.
| A．create a new animal |
| B．clone a new species |
| C．produce the first artificial bacteria |
| D．develop a new system |
a. A gene was removed and put into a host bacteria cell.
b. The genes were put into a yeast cell.
c. The cell produced new healthy bacteria.
d. The genes were changed.
e. Some genes were taken out of Mycoplasma mycoides.
| A．d-e-a-c-b | B．e-b-d-a-c |
| C．a-d-e-c-b | D．b-e-d-c-a |
| A．cure deadly diseases |
| B．prepare the Earth for natural disasters |
| C．prove that the technology can work |
| D．improve the earth’s environment |
| A．Venter and his team are the only scientists trying to create artificial life |
| B．The experiment was based on research into different kinds of life on Earth |
| C．A new type of bacteria was created in January |
| D．All scientists are not in favor of the research |